Planing-machine attachment



(No Model.)

H. LEVERENTZ.

k PLANING MACHINE ATTAGHMENT. No. 316,156. Patented Apr. 21, 1885.

STATES ATENT arren.

PLANlNG-IVIACHINE ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 316,156, dated April 21, 1885.

Application filed December 2, 1884.

T0 (tZZ whom it may concern.-

Be it known that I, HENRY LEVERENTZ, a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Planing-Machine Attachments,of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to an improved planing-machine attachment.

The object of my invention is to provide an attachment for such machines by the use of which the sharpening of the cutter-heads thereof is facilitated; and to the accomplishment of that end the invention consists of the novel devices and combination of devices as will be described.

Reference will be made to the accompanying drawings, in which Figure 1 is a plan View of the attachment, showing part of the machineframe; and Fig. 2,a longitudinal section thereof.

Like letters refer to like parts in each view.

A A represent parts of the machine-frame, and B the cutter-head thereof, each of any well-known construction. In that part of the frame marked A a shaft, 0, has bearing, said shaft being driven by any suitable mec'hanismsuch as belting and pulleys. Upon shaft 0 there is also mounted a pulley, D, around which belting D is passed, this belting being also passed around a pulley, E, mounted upon one end of an arbor, F, through the medium of which connections motion is imparted to said arbor.

Arbor F has hearings in a frame, G, consisting of suitable side and cross pieces, as shown clearly in Fig. 1, and which is loosely mounted at its rear end upon shaft 0, hereinbefore referred to.

Mounted upon a feather (not shown) formed on arbor F is an emery-wheel, H, which by this arrangement is made laterally adjustable. The hub of Wheel H is grooved suitably to receive a handle, J, through the medium of which the lateral adjustment of such wheel H upon arbor F is accomplished.

Formed upon the side rails of frame G are brackets a,each provided witha screw-thread- (No model.)

ed opening,through which a thumb-screw, K, is passed. As hereinbefore mentioned, frame G is loosely mounted at its rear end upon shaft 0, and is therefore rendered adjustable, as indicated in dotted lines, Fig. 2.

The arrangement of the several partsis such that when lowered the front end of frame G will occupy a position above the cutter-head shaft, thereby enabling the emery-wheel to be brought into contact with the cutter-head.

The thumb-screws K referred to are adapt ed to contact with parts I) of the frame of the machine, whereby'the exact position of the emery-wheel with respect to the cutter-head can be determined.

During the process of sharpening, a block, L, (dotted lines, Fig. 2,) is placed beneath the blade being operated upon, to steady it and insure uniformity in the edge, said block having suitable support at its lower end upon the machine-frame.

The operation of the device is as follows: When the cutter-heads are in use and it is not desired to sharpen the cutters thereof, the frame G is raised through the medium of any suitable handle, as M, to the position shown in dotted lines in Fig. 2, where it is convenient to reach it, but not in the way of the successful working of the machine. When it is desired to sharpen the cutters, the thumbscrews are adjusted to determine the position of the frame, and said frame lowered until such screws reach their supports. Motion is then imparted to shaft 0, and through the medium of the belt-connections described to the arbor F and emery-wheel H. The block M being then placed under the cutter to be operated upon, the operator moves the emery-wheel laterally upon arbor F and over the cutter, thereby sharpening the entire cutter uniformly throughout. When all the cutters have been sharpened, the frame is again carried to its first position, the block removed from beneath the cutter, and the planing-machine is again ready for use.

I am aware that a swinging frame has heretofore been mounted upon a planing-machine frame, said frame being horizontally adj ustable, and the sharpening device being stationary on its shaft as far as its horizontal adjustment is concerned, and also that a planingframe G, sharpener H, adjustably mounted on machine has been constructed with a stationshaft F, and adjusting and supporting screws ary frame in which has been' mounted a hori- K, all arranged as and for the purpose set forth. zontallyadjustable sharpening device, and In testimony whereof I affix my signature 5 therefore I lay no claim to either of such feain presence of two Witnesses.

tures separatelybut I T What I HEB RY LEVERENTZ. In a planing-.machine,the combination,with Witnesses: the frame thereof, of swinging frame G,1oosely M. J. CLAGETT, 10 mounted upon shaft 0, shaft F, mounted in l LoUIs NOLTING. 

